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It's hard to stand out in Peak TV. So a promotional window during the Super Bowl, however brief, can make all the difference.

HBO (with Westworld), Hulu (Castle Rock) and Amazon (Jack Ryan) were among the outlets to plug their series during NBC's coverage of Sunday's big game. It's one of the biggest showings of confidence a series can get. The price tag on a mere 30 seconds of Super Bowl ad time climbed to $5 million for 2018. But the value of the watercolor conversation can far surpass that. A major highlight of the 2017 Super Bowl commercials was the tease for Stranger Things 2. Netflix's Eggo-inspired short topped best-of lists, kept the binge-able show in the people's minds during the long hiatus and offered one of the day's few surprises.

Such surprises are harder and harder to come by. Most commercials roll out online in the weeks leading up to the game, and this year was no exception. TV-centric spots were limited, though Hulu's Castle Rock dropped a new first look — and NBC continued to hammer viewers with reminders of the Winter Olympics and alerts for Sunday night's dramatic This Is Us special.

Rise(NBC)
From showrunner Jason Katims and the producers of Hamilton, NBC's musical drama is about a dedicated teacher (played by Josh Radnor of How I Met Your Mother fame) who takes over his high school's struggling drama department, inspiring the students, faculty and community in the working-class town. Rosie Perez, Auli'I Cravalho and Damon J. Gillespie star. The drama premieres Tuesday, March 13, at 10 p.m. ET/PT after the season finale of This Is Us.

Westworld (HBO)
Off the air since December 2016, the premium cable network returned to the Super Bowl for the first time in 20 years to promote the high-concept, star-studded genre drama. From co-creators/co-showrunners Lisa Joy and Jonah Nolan, the latter created the season two trailer specifically to air during Sunday's game. This is the first season-two footage released since last summer, when HBO offered a spoiler-loaded glimpse during its time at Comic-Con. A premiere date has not yet been determined.

Castle Rock(Hulu)
Set in the Stephen King multiverse, the J.J. Abrams- and Stephen King-produced anthology is a 10-episode drama from writers/executive producers Sam Shaw and Dustin Thomason (Manhattan). The anthology features characters and themes from King's novels featuring the mysterious town of Castle Rock. The series is set to premiere this summer; a specific date has not yet been determined. Andre Holland, Sissy Spacek, Jane Levy, Melanie Lynskey and Bill Skarsgard star.

Jack Ryan(Amazon)
Based on Tom Clancy's popular novels, Jack Ryan stars John Krasinski (The Office) in the modern update of the beloved CIA thriller from Carlton Cuse (Lost). The drama revolves around the titular Ryan, an up-and-coming CIA analyst thrust into a dangerous field assignment for the first time. Wendell Pierce, James Greer and Abbie Cornish co-star in the promo, which marks Amazon's first-ever Super Bowl ad. The eight-episode drama launches Aug. 31 on Amazon's Prime Video platform.

Which promo most impressed you? Sound off in the comments section, below.